A baby needs urgent medical care if they are having trouble breathing, turning blue, are difficult to wake or barely respond, have a seizure, or are getting worse quickly. Call emergency services if you notice these signs. If there are worrying symptoms but no immediate threat to life, contact a doctor right away.
Illness can progress quickly in babies, and they cannot tell you what is bothering them. So if your baby becomes ill, watch not only their temperature but also their breathing, alertness, feeding, and overall condition—and don’t wait if they seem unusually lethargic or are getting worse.
| Situation | Action |
|---|---|
| Under 3 months old, temperature of 38 °C or higher | Urgent medical assessment |
| Difficulty breathing, pauses in breathing, or bluish lips | Emergency care |
| Seizures or difficulty waking the baby | Emergency care |
| Runny nose or cough, with no difficulty breathing | Contact a pediatrician and describe the symptoms |
| Eating less or urinating less often | Contact a pediatrician; seek urgent care if the condition worsens |
- 38 °C Temperature threshold for urgent medical assessment in a child under three months old
- 3 months The age cutoff below which a temperature of 38 °C or higher requires urgent assessment
- 1 child This is about assessing an individual baby’s condition, not a statistical diagnosis
When does a baby’s temperature require urgent assessment?
Under three months old
If your baby is under three months old and has a temperature of 38 °C, they need urgent medical assessment: don’t wait for a routine appointment. Tell the doctor what the thermometer read, when you took the temperature, and how you measured it.
- Age: under three months.
- Threshold: 38 °C or higher.
- What to note: the temperature reading, time, and method of measurement.
This information helps the doctor assess the reading. Don’t delay seeking medical care if a high temperature is accompanied by a sudden deterioration in your baby’s condition.
Over three months old
For a baby over three months old, urgency can’t be judged by the number on the thermometer alone: it’s important to assess their breathing, alertness, drinking, and urination. Notice whether your baby is struggling to breathe, unusually sleepy or difficult to wake, able to drink, and urinating as usual.
If your baby’s condition suddenly worsens while they have a high temperature, don’t wait for it to go away on its own or delay contacting a doctor. If you’re unsure about your baby’s condition, tell the doctor their temperature and describe any changes in breathing, alertness, drinking, or urination.
Which signs require emergency care?
Difficulty breathing, pauses in breathing, or bluish lips in a baby are reasons to call emergency services immediately; don’t wait for the condition to pass on its own. Urgent assessment is also needed if your baby is difficult to wake, unusually lethargic, or not responding as they normally do.
Seizures, an unusual rash that doesn’t fade when pressed, and repeated vomiting require immediate medical attention. Tell the dispatcher exactly what you’ve noticed: changes in breathing or lip color, difficulty waking your baby, a rash, seizures, or repeated vomiting.
If your baby is too unwell to drink or eat, be sure to tell the dispatcher or doctor. This is important information when assessing how urgent the situation is, especially if your baby is also having difficulty breathing, is unusually lethargic, or has any of the other signs listed above.
When is it enough to contact a pediatrician?
Contact a pediatrician if your baby is under one year old and is eating less, urinating less often than usual, or noticeably less active than usual. Changes from your baby’s normal behavior matter: tell the doctor how feeding, the number of wet diapers, and your baby’s response to people and surroundings have changed.
If your baby has a runny nose or cough but no difficulty breathing, and continues to drink and respond as usual, discuss the symptoms with a pediatrician and ask whether an examination is needed. Before calling, have four details ready: your baby’s age in months, temperature, when the symptoms began, and information about feeding. Give the temperature reading along with the time it was taken.
If your baby’s condition changes
A routine call to the pediatrician is appropriate as long as your baby’s condition remains stable. If, while you’re waiting for a response, your baby starts having more trouble breathing or drinking, or becomes less responsive, don’t wait for a routine consultation—seek urgent medical care.
How can you tell if your baby is getting enough fluids?
To assess whether your baby is getting enough fluids, consider their usual feeding routine and the number of wet diapers: what matters is how these compare with your baby’s normal pattern. Keep track of how often your baby breastfeeds or takes formula and whether they’re able to keep a feed down.
Compare wet diapers with your baby’s usual number, rather than a universal figure: a noticeable decrease—especially along with lethargy—is a reason to contact a doctor urgently. Tell the pediatrician about dry mouth, unusual sleepiness, and refusing the breast or formula as separate symptoms; don’t wait for all the signs to appear at once.
What not to change on your own
Breast milk or infant formula should remain your baby’s main drink: don’t replace it with water or change their feeding routine without advice from a medical professional. If your baby is feeding less often, can’t keep a feed down, or has noticeably drier diapers than usual, tell the doctor what you’ve observed and ask what to do next.
Which home remedies and medicines can be harmful?
What not to do
Don’t give a baby cough and cold medicines without a doctor’s prescription, aspirin for viral-like symptoms, or medicines intended for adults. Choose a fever-reducing medicine for your baby’s age and weight together with a doctor. Cough and cold medicines have different age restrictions, so check exactly who the medicine is approved for rather than using the dose for an older child.
- Cough and cold medicines: don’t give them to a baby without a doctor’s prescription—the age restrictions vary by medicine.
- Aspirin and adult medicines: don’t use them for viral-like symptoms or estimate an adult dose “by eye.”
- Fever reducers: ask a doctor which medicine and dose to use based on your baby’s age and weight; don’t calculate the amount yourself.
- Rubbing alcohol: don’t use it to bring down a fever.
A baby’s temperature shouldn’t be a reason to delay seeking medical care while you try to bring it down at home. If you’re worried about your baby’s condition, contact a doctor: don’t wait to see whether an unsuitable medicine or rub will work.
What should you tell the doctor when you call?
When you call, immediately tell the doctor your baby’s age in months, describe the symptoms, and say if your baby is under three months old. List exactly what’s concerning you—for example, a temperature, cough, vomiting, or rash; don’t just say, “My baby is unwell.”
Give the exact thermometer reading along with the time and method of measurement—for example, whether you took it under the arm or another way. If you checked the temperature more than once, share each reading and the time it was taken to help the doctor understand how your baby’s condition has changed.
What else to have ready for the call
Describe any changes from your baby’s usual condition: how they’re feeding, how many wet diapers they’ve had, whether their breathing has changed, and whether they’re harder to wake. Stick to what you’ve observed—for example, that your baby is taking the breast or bottle less often or breathing noticeably differently than usual.
If you’ve already given your baby medicine, keep the packaging nearby and tell the doctor its exact name and dose. Say when you gave it; don’t rely on memory if you can check the name or amount on the package.
Frequently asked questions
What temperature is dangerous for a baby under three months old?
Can I give my baby a fever reducer before calling the doctor?
When does a runny nose require emergency care?
What should I write down before calling the pediatrician?
Key takeaways
- A temperature of 38 °C in a child under three months old requires urgent medical assessment.
- Difficulty breathing, bluish lips, seizures, and difficulty waking your baby require emergency care.
- Before speaking with a pediatrician, note your baby’s temperature, age in months, feeding, and any changes in wet diapers.
- Don’t give your baby cold medicines or adult medicines without a doctor’s prescription.
